While walking the dog I stopped at the corner to wait for her and just turned to the side where some birds were chirping in a tree, winter was late and seemed rather cold, above the tree there were two shapes of worm like entities intertwining with each other with 90 degree angles, they floated farther away probably closer to the river, I stood there watching them for a while and then noticed that they weren't leaving they appeared to be moving constantly. Since my dog ran off farther down the path I slowly began to follow her and kept turning back to check if they were still there, after returning home I checked through the window and they seemed to remain there through the night ... I never saw them leave, but strangely I never saw them arrive ether, its as though they just faded out of sight ...